Well, your question is somewhat hard to answer, but let me try my best.
First off, we don't give information on "techniques" here - everyone enjoys different things within the realm of sexual activity, so the best thing you can do is talk about your likes and dislikes with your partner. There are just no hard and fast rules.
As far as oral sex being "gross" or "sick "- that falls into the realm of opinion - mind you, they aren't opinions we suport here, though. Consider this; humans are *designed* to respond to one another based on tastes, smells and other sexual stimulus. All in all, you might be surprised at how you respond to your partner during oral sex. Also remember that Sexual fluids, like the lubrication produced by the vagina, and seminal fluid and pre-ejaculate is nothing more than mostly water, simple sugars, enzymes, and peptides - and possily a few trace viruses or bacteria. All in all, it is pretty inert stuff, as long as you practice good hygeine, you shouldn't notice any "off" smells or tatses.
However, also remember that when practicing oral sex, he should be using a dental dam on you, and he should be wearing a condom (unlubricated, or a flavored one designed for oral sex - these can also double as dental dams if you cut them). You might actually prefer these because it will, obviously, cut down on the number of fluids you come in contact with, as well as protect from those fluids should they contain bacteria or viruses that could cause an STD or STI.
Hope this helps! Please visit our home page, and read a few of the articles - Especially "Safe, Sound and Sexy" as it will give you all sorts of info on safer sex.